This article discusses the newly added blue zone of Singapore, which is noted in the article to be "an engineered blue zone, instead of one that emerged organically like the other five":
https://fortune.com/well/2023/08/29/sin ... -buettner/
Quick list of the blue zones:
- Sardinia, Italy
- Loma Linda, California
- Ikaria, Greece
- Okinawa, Japan
- Nicoya, Costa Rica
- Singapore